Showing 6 results for Karimi
Meisam Taghinasab, Ebrahim Karimi,
Volume 1, Issue 2 (9-2012)
Abstract
The soft rot causal bacteria, species of Pectobacterium and Dickeya, are important pathogens of plants, which have worldwide distribution. These bacteria are very broad host range and cause plant tissues rot . Diseases caused by these bacteria in the form of soft rot, black stem, bulb rot and leaf spot of corn, rice, canola, sugar beet, potatoes, banana, dates, carrots, cabbage, onions, turnips, peppers, philodendron, pandanus, dieffenbachia, Cyclamen, Iris, Aglaonema, Dracaena, Gladiolus, Ficus, ornamental cactus, and Orobanche have been reported from Iran. Some varieties of field crops such as corn, tomatoes, potatoes and sugar beet, as tolerant to these bacteria in Iran.
Keivan Karimi, Mahdi Arzanlou, Fariba Mirabi,
Volume 4, Issue 1 (3-2015)
Abstract
Karimi K., Arzanlou M. & Mirabi F. 2015. Barley scald disease. Plant Pathology Science 4(1):1-12.
Barley is one of the world`s most widely consumed cereal. Rhynchosporium commune, the causal agent of barley leaf scald, is one of the most deleterious pathogens of barley which can cause up to 40% yield loss, under favorable conditions. Primary infection takes place by spores produced on infected plant debris. The secondary infection can be repeated by spore dispersal by rain and wind. Although the teleomorphic stage is unknown, high levels of genetic diversity have been observed within and between populations of this pathogen, attributed to some mechanisms such as gene flow, parasexual cycle and asexual recombination. The management of this disease is mainly achieved through cultural and chemical measures of control and use of resistant cultivars. In this paper, different aspects of pathogen symptoms, taxonomy and biology of pathogen, and management of disease are discussed.
Kaivan Karimi, Asadollah Babai-Ahari, Mahdi Arzanlou,
Volume 4, Issue 2 (9-2015)
Abstract
Karimi K., Babai-Ahari A. & Arzanlou M. 2015. Strawberry anthracnose disease. Plant Pathology Science 4(2):26-40.
Anthracnose disease is one of the most destructive diseases of strawberry which caused by Colletotrichum acutatum, C. gloeosporioides and C. fragariae. C. acutatum and C. gloeosporioides species complexes possess wider host range. According to the latest multi-gene phylogenetic evaluation, different strains of the causal agent of strawberry anthracnose disease which have been collected from different regions of the world, belong to these two species and are divided into several clusters, related to cryptic species. Despite infecting various parts of the plant, C. acutatum is mostly responsible for fruit rot and in comparison with two other species, causes crown rot and is more prevalent and destructive. Dispersal of pathogen inoculums mainly takes place by rain splash and sprinkler irrigation as well as by movement of human beings and animals. Integrated management of this disease is mainly achieved through cultural, chemical, biological and the use of resistant cultivars. Giving the importance of strawberry anthracnose disease in terms of damage rate and its recent incidence in many strawberry growing areas in Iran, different aspects of the disease, including diagnosis of the causal agent, biology and efficient management methods are discussed in the present review.
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Hadi Karimipour Fard, Karim Saeidi,
Volume 8, Issue 1 (3-2019)
Abstract
Karimipour Fard H. and Saeidi K. 2019. Biopesticides from entomopathogenic nematodes
Plant Pathology Science 8(1): 60-73. DOI: 10.2982/PPS.8.1.60.
In the recant decade, biopesticides with entomopathogenic nematodes (EPNs) have been developed with using different methods and materials. But the production of such biopesticides has always accompanied by some limitations such as low quality of the final product, and reducing the efficacy under field conditions. Recently, significant progress has been made in increasing in the survival time of these products. Applying two types of formulations, water dispersible granules and calcium alginate capsules, has increased the EPN survival time from 7 days to 180 days. As compare to aqueous formulation, the formulations based on the use of insect cadavers with EPNs, showed higher efficiency in pest control. New methods of the mass production of EPNs, using automated production lines and the use of new additives with better properties for field applications and methods in increasing the infectivity of these nematodes in pests are discussed in this article.
Kavous Keshavarzi, Hadi Karimipour Fard,
Volume 10, Issue 1 ((Autumn & Winter) 2021)
Abstract
Keshavarzi K, Karimipourfard H (2021) Bacterial diseases of walnut trees in Iran. Plant Pathology Science 10(1):107-116. Doi:10.2982/PPS.10.1.107.
Walnut is one of the most important fruit trees in Iran, which is always exposed to pathogens, especially bacteria. The three most important bacterial diseases of walnut in Iran are bacterial blight (Xanthomonas arboricola pv. juglandis), skin cankers (Brenneria nigrifluens, Brenneria rubrifacians) and crown gall (Agrobacterium tumefaciens). Bacteriological characteristics and pathogenicity of pathogenic bacteria, methods of managing these diseases, along with suggestions for identifying resistant genotypes of walnut trees by molecular methods are described in this article.
Maryam Khezri, Mahmoud Reza Karimi Shahri, Abolghasem Ghasem,
Volume 12, Issue 1 ((Autumn & Winter) 2023)
Abstract
Khezri, M., Karimi Shahri, M. R., & Ghasemi, A. (2023). Bacterial rot disease of saffron corm and leaf. Plant Pathology Science, 12(1), 74-83. Doi: 10.2982/PPS.12.1.74
Saffron is one of the valuable agricultural products and its dried stigma is used as medicine and is known as a precious spice. Infection of the plant's reproductive organs plays an important role in the spread of pathogens. The saffron is reproduced via corms, and using healthy and pathogen-free corms is the best and most effective strategy to prevent the spread of soil-borne pathogens in new areas and fields. Saffron corm rot disease is caused by some fungal and bacterial pathogens. Burkholderia gladioli pv. gladioli is the causal agent of saffron leaf and corm rot disease. The bacterium survives in the soil for a long time, and it is transmitted through the infected soil, farming tools, and corms. In recent years, this disease has been reported from Khorasan Razavi province. In this article, along with introducing the bacterial disease of saffron leaves and corms rotting, strategies to prevent the occurrence and spread of the disease have been presented.
